johnnygoging: firefox
edit: pale moon and waterfox and any other BSFox are all just 95% Firefox. maybe even more than that.
if Firefox doesn't run well, chances are something else won't either.
double edit: you could try brave.
correct... imho FF is the only decent and petty 'safe' browser to use...
if FF is laggy, chances are there are to many addons /plugins or whatver FF allows to be added.
I have some addons and i must admit that some might lag the browser, but if you buy games on a legit site, you can disable the adblocker, my addblocker is only disabled for a few sites: GoG is one of them
Av or antimalware that has realtime protection might cause lag, KAV or KISS (kaspersky labs)
might lag if you have all incoming and outgoing ports and so checked, i dont know how the stuff works but
maybe the safetyzone is set to high in your Av/ antimalware protection.
Browsers also have a protection level, at least IE has (and IE has past away in win 10)