How do you fix heavy imput lag in hearthstone?

For some reason my hearthstone started to have 2-5 seconds of imput lag per action (playing a card, attacking with a minion). I came back to the game after not playing for a year.
Does anyone know how to fix that? Before it was running just fine, i have never had any lag or imput lag before this.
The only thing that i think could be causing it is that i switched routers, but everything else is running just fine. I Don’t see why hearthstone would have such problems

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Is it specifically input lag, or more like latency?

I’ve seen a number of issues lately that sound like this.

The most common of course is just normal latency, where you input an action, and the game seems to hang forever to confirm it.

Input lag would be a delay in you doing anything and it actually happening. Example would be tapping the board, and the particle for tapping / sound etc. doesn’t happen until 1 second after you tapped. You could do inputs quickly and have to wait for the game to show your input while you are no longer doing anything. This is a pretty rare thing.

I’ve also since returning seen a lot of micro-stuttering where the game hangs at 0 fps for a split second, which leads to a lot of misinputs and selecting things you’re not meaning to select because the game was frozen when you started to click and drag, and only responded after you were halfway through said drag, selecting whatever was under your cursor when it started to respond.

Each of these things are distinct issues with different causes and solutions.

I think my issue might be latency then, when i play a card it takes like 3-5 seconds untill the next card i want to play turns green and i am able to play it, same goes for ending a turn and attacking with minions, also sometimes a move doesnt even register, i have to do it multiple times

Its almost unplayable when you use combo decks where you have to use a lot of cards in a turn, thats one of the reason im searching for a solution. The reason i came back was to play wild miracle druid

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Blizzard recommends running WinMTR tests while the problem is happening, and their own Looking Glass tracert app as well.

WinMTR support article here: https://us.battle.net/support/en/article/27780?utm_source=internal-TechForum&utm_medium=posting&utm_campaign=BlizzardCS&utm_content=solution

You will need to select Hearthstone from the dropdown list on that article to fetch the correct server IPs. This sort of program helps detect where there is a point of failure between you and the server. WinMTR pings until you tell it to stop, so end the test when you feel you have plenty of data.

Looking Glass here: https://us.battle.net/support/en/article/34785?utm_source=internal-TechForum&utm_medium=posting&utm_campaign=BlizzardCS&utm_content=solution

This is similar to WinMTR, but is is done entirely through your browser.

Ideally, run these separately when the problem is actively occurring, then post your results here. WinMTR has an export function for turning the read out into a txt file. I’m not as immediately familiar with Looking Glass but it should be similarly simple enough to share the results from.

Thank you for all the advice, ill see if i can run those. But are there any ‘‘common’’ things that could be causing it? Might as well try to see if those were the things causing it, since it feels kinda strange to run software off the internet. If theres no other choice i might, but are there any things that commonly cause the problem that i can check out first?

Well, you suggested a router change coincided with the issue. That can be a lot to deal with. Is it a WiFi or LAN connection? There’s a lot of ways a router can be configured that could cause problems.

It’s ideal to run the tests because it will point to where the problem is.

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