Hi radoslawbrus, do recall how long ago the problem with Google Maps started? There have been some c

Hi radoslawbrus, do recall how long ago the problem with Google Maps started? There have been some changes in recent versions of Firefox that may be independent of the general hardware acceleration setting that also may trip on graphics device driver compatibility issues (e.g., OMTC, Warp GL).

Have you checked for updates to your graphics card/chipset driver software? This article has more info on that: Upgrade your graphics drivers to use hardware acceleration and WebGL.

If you need to disable those newer features, here are the steps:

(Warp GL - Firefox 37)

(1) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(2) In the search box above the list, type or paste layers and pause while the list is filtered

(3) Double-click the layers.d3d11.disable-warp preference to switch it from false to true

(OMTC - Firefox 33)

(1) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(2) In the search box above the list, type or paste layers and pause while the list is filtered

(3) Double-click the layers.offmainthreadcomposition.enabled preference to switch it from true to false

Note: I read in a bug report that this change causes problems with the HTML5 player on YouTube, if hardware acceleration is disabled, so you might also need to force Flash on YouTube if you keep this setting. You can use an add-on for that: https://addons.mozilla.org/firefox/addon/youtube-flash-video-player/