Do traffic counters slow down website loading?

Question

Project management

Hello! Faced with a trivial task.
The SEO master asks to put counters on the site: Metrika, Analytics, LiveInternet, OpenStas.
I put it, but the question arose - do the counters affect the page load?
I don't want to lose my download speed (0.3 seconds) due to the vagaries of the seo-shnik
Help, please. Share your experience, if it slows down the download, then how to fix this problem most quickly?

Answer 1

Set it asynchronously.

Answer 2

[start comment from lamer nub]
learn.javascript.ru/external-script
use

<script src="async.js" async></script>
<script src="defer.js" defer></script>

podovan
[/end comment from lamer nub]

Answer 3

why put everything at once? 1-2 is quite enough, but in essence, these are scripts, even if for 0.00000001 sec it still slows down.

Answer 4

Load counters after page load. They are still at the bottom.

Answer 5

nothing will stop you from deleting them if they critically degrade the speed