RAM upgrade same brand - now problems

A few days ago, I upgraded my RAM from 32GB to 64GB.

So now I have Corsair Dominator Platinum RGB 32GB (4x16GB) instead of 4x8GB.

I feel like my PC is slower or hangs during video games ( Mafia 2 DE).

In Helldivers 2, I didn’t notice any issues, but maybe that’s because of all the action happening. 😄

However, League of Legends crashed 4 times during a match, which never happened before.

Here are my specs:

• Gigabyte B660 GAMING X DDR4 - 1.0 - Motherboard - ATX - LGA1700 Socket - B660
• 12GB PowerColor Radeon RX 6700 XT Red Devil 12GB GDDR6 HDMI 3xDP
• 700 Watt be quiet! Pure Power 11 CM Modular 80+ Gold
• Intel Core i5-12600KF LGA1700 6C+4c/16T, 3.70-4.90GHz WOF

Do you have any ideas?

I wanted to try MemTest86, but it didn’t show up in the BIOS.