I passed 100 days on bungie recently, casual like many, never finished a Raid, and at start had the same issue with Cores when I passed 500 power level, even made a thread on official forums. There were discussions and whines lol and also suggestions, I came outta my comfort zone and accepted that it is me doing it wrong. So, I started to google a bit then started to roam around Destiny world and find a good way that suits me to get them. So, with simulation seed farm idea. I focused on forging Mercury weapons. In this process I also had Spider Bounties on side note. By just playing the game, I was completing them one after another. I was completing Mercury forges and Spider bounties. in this process I was getting Cores already. When that was done, Simulation Seeds made it even much easier. You can repeat Simulation Seed Farm couple of times and get good amount of mats you need. Remember to empty your inventory on vault and then visit Brother Vance, don't let much goes to postmaster as things might loss in process if postmaster get fulled. I also understood there is no need to rush and have many weapons infused fast, as there are recommended power for many activities. so at power level 550, You could run Leviathan, NF, Strikes and many other stuff. But as I was going up, I wasn't even rushing to use new drops as you get higher drops by just having them in your vault. I chose a set that I infused them with 15-20 power ups, such as Thunderlord, Badlander, Breakneck when got around 600 power lvl, to be able to run higher needed power activities. So, this is the main key here, For this season I have't touched my new drops, because only one activity needs higher power requirement and that is the end game content, so it makes sense to have a bit difficulty getting ready for it as it is as said an end game content. PVP weapons and sets were never my focus to be infused, Only Iron Banner is using power level, so you could make a set for it, or slowly with time infuse same new drops to infuse them with glimmer. Also I like Exotic Duplicate drops, they are good to infuse too. Patience, I stopped infusing and burning my Cores. We can run around the world with lower power level and kill things, no need to rush at all. When you can run Leviathan at 300 which is a raid, getting there at 700 won't make a difference. So take your time, enjoy it. This is a great design. This part actually was important and made me realize that actually farming Cores is fun and sends you around the open world with new adventures. Not much pressure, looking around, finding chests, Investigating items, doing Heroic Public events when was waiting for Wanted Enemies to appear. In this process, I completed Triumphs, Badges such as Forsaken, Red War. Also doing Heroic Public events, Lost Sectors got me Exotic Engrams, this is season so far got 4 already. So, without much sweat, I was having fun killing things with different weapons, getting kill counts on my weapons, emblems and getting things done. It was fun, try it this way and see for yourselves. Also Each time I was on a planet to get lost sector or Wanted Enemies. I got bounties from vendors. By completing them, I could get more mats either for Infuse cost or get to vendor and turn them to engrams to get more cores. These also can happen fast and it is part of the game, so you are just playing the game, each aspect of the game has a purpose and has it's own rewards, with a Looter Shooter is it really strange and is it really developer's fault that they designed it like this? To me, it was all fun and system is fine. and it comes from someone that was looking to remove them. When I thought it about it more, I realized why system is planted and why it is fine. Also draws a line for players that are willing to farm for them, to use more guns and masterwork them and those are not willing to farm for them and whine about it. Core Bounties, Do them fast if you are in need of Cores. When got the 3 of them, Cache, Vanguard, Crucible. Vanguard you can start from planets if don't wanna finish them, The Corrupted is good since there are many mobs at entrance to kill, you can finish and abandon. Or you could get bounties from Zavala, Planet vendor and Shaxx. Finish as many as you can, when done turn the tokens and mats and get more bounties and Cores, Shards. In this process I got lots of Mod components too, even mods from open world drops. Because there are legendary drops with mods attached. And if you have BA, then much easier. So get out there and farm them. I did and it suited me well. You don't need to do anything special, just play the game and manage it. Good Luck Guardians, sorry for Long Bad-English thread lol