I was using Metamask on Chrome (Windows) for several months and it was fine. But as soon as I switched to Brave on the same machine, it’s been VERY slow in responding. By ‘slow’, I mean minimum 10 seconds for the window to appear when I click on the extension in the top-right, or if a Dapp/Dex needs a transaction to be approved then it often takes 30 seconds for the box to appear. It can be a pain when yield farming because I’m constantly moving money around.
I’m also convinced that the slowness contributes to more failed transactions for me. I deal a lot with volatile small cap coins. I think MM takes such a long time that the price has actually changed by the time I get to confirm the transaction, so it fails.
As I say, it was OK with Chrome.
It is not linked to any hardware wallet, it’s just normal Metamask.
I use Metamask with about 10 different networks and they all behave like this.
I doubt very much that this is a cache/reset problem, because it was working all OK on Chrome for me, then the moment I switched to using Brave (when transaction history would have been empty) I noticed it slow down significantly.
I have asked this same question on the Brave forums but the only thing they suggested was “have you asked on the Metamask forums?”