You say tearing. Have you tried enabling Vsync? Are you using an SSD for these games? Are you using one cable from the PSU to plug in the GPU or two? Ark: Survival Ascended is a mess. I played on my 7900 XT and even then it doesn't run well. Forza Horizon 5 runs well on every system I tested it on, GTX 1060 6GB, RX 5600 XT, RX 6800 XT, and RX 7900 XT. Do you have SAM enabled?
Ryzen 7 7800X3D, ASUS ROG STRIX X670E-F GAMING WIF, G.SKILL TRIDENT Z NEO 2x16GB DDR5 DRAM 6000MT/s CL30, AMD Radeon RX 7900 XTX, LIAN LI EDGE 1300, Corsair MP600 PRO NH 4TB