Perhaps card is being overtaxed with too many other apps/browsers/websites open (minimized), or some game settings ?
You can do some other basic troubleshooting,
My PC- Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3600c16dgtzn kit, NM790 2TB, Nitro+RX6900XT, RM850, Win.10 Pro., LC27G55T.