It seems your switch may be related to the card having a dual bios and the "Performance" mode might be when that switch is to the right.

Some have said that you may have to use DDU and reinstall the drivers in order to see the difference, if indeed that is what the switch does.

If the switch on your specific card does perform that function (low power vs performance) it won't do anything until you reboot the PC.

There is also the possibility, even probability that your CPU is bottlenecking the card significantly, but there still doesn't seem to be a reason it would run worse than a 1050ti.

Finally, a new GPU doesn't rewrite the game code or change the textures, and should you want to use higher settings if any are available, you would need to do so in the games menus and possibly in your Adrenalin software.

One more thing, as you seem to be talking about relatively high frame rates, even at 90, is that with the higher settings you're not going to get high frame rates.

Depending on the game, it could look almost identical, obviously as it's largely the exact same textures, have a few nice tweaks or effects turned on and you would see a lot lower frame rates than if your settings were lower, or even than if you used a "worse" card with much lower settings.

Unless you have a specific reason to keep drivers for uninstalled GPUs it might be worth checking if doing so helps.

Might have cause a driver conflict or might not have. I'm pretty strict with DDU ing even the old drivers within one brand but YMMV.

The other thing could be that you got a fake or faulty card. I've had a fake card even from Amazon before, so do your research on fakes of that card and check.