That's great.
But CL22 will not much notice slow down. It's different speed. I heard if too high clock or overclock cause blue screen of death (BSOD). Do not affect a lot of PC games. Maybe affect very, very few PC games which are biggest or huge are resource hungry if settings are on very high or ultra maybe notice slow down due to RAM and GPU are share through bandwidth transfer between. Such as shooter games and race (drive vehicles) games.
If replace RAM in computer maybe not work. There is work around is reset CMOS or/and remove battery coin from motherboard then wait for between 1 minute to 5 minutes then put back in same place should fix RAM issues.
For some of laptops, maybe not work if after installed RAM. Remove battery plug from motherboard first then remove battery coin from motherboard. Wait for 1 minute to 5 minutes for BIOS to clear all setting include like RAM. Then put battery coin back in motherboard first then put battery plug back in motherboard then RAM issues can be fixed.
If RAM not working, can be due to defect or DOA (Dead on arrive), send back to store where anyone bought before. Have two opinion are exchange or refund to get money back. Notice about few RAM have very low chance due to defect or DOA.
Always check RAM to see what's working or not. Anyone will know.
I recommend use program name is
Memtest86+ can check all types of RAM to check health which are good or bad. If find bad RAM then replace another new RAM to fix problems.
Memtest86+ homepage:
https://www.memtest.org/