I replaced an old rx 560 with a brand new MSI mech rx 6650 xt and I now have stutter problems in newer games some older to. Sometimes games run smoothly but in many cases they start stuttering and lagging. Also I figured it could be the PCIE 3.0 motherboard ASRock H310CM that doesn't support PCIE 4.0 GPU too well. I have a i5 9400f CPU running at 3900mhz and 16gb of RAM. Power supply is also enough powerful - 650W.If there's anything that can be done to improve this please someone to let me know, except buying a better motherboard. Tnx.