Well quite. A sledgehammer is undoubtedly a better hammer than a claw hammer, but I wouldn’t want to knock in nails with one.
The acid test would be to see what other devices are doing; if it’s just that one device then a better card could help. Trying a different dongle is a good idea too.
Problem is, WiFi can be a PITA for weird symptoms. I had an intermittent fault with a PC here for ages, eventually nailed it down that if it was >here< on the desk then it worked perfectly, but if it was >there< on the desk then it was up and down like a yoyo with hiccups. Just happened to hit a blackspot in the room.
It’s stuff like this that makes me twitch when people go “this doesn’t work, what do I need to buy” because the follow-up question can easily be “I bought this because YOU TOLD ME TO and it still doesn’t work!!”