[Bug 1959747]

[Soeren-hentzschel]

> which has removed the possibility of disabling webrender

I assume you already tried the newest graphics drivers.

Why would you want to *completely * disable WebRender? Do hardware AND
software WebRender crash for you? You can set gfx.webrender.software to
true to disable hardware WebRender and enable software WebRender
instead. Please try this instead of using an e-mail client with security
vulnerabities (since Thunderbird 91 won't receive any further security
update we have to assume that Thunderbird 91 is insecure now).

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https://bugs.launchpad.net/bugs/1959747

Title:
  [upstream] Very high CPU and slow responsiveness in Thunderbird 91

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