Sub optimal default preferences for rendering.
#### Steps to reproduce:
- open Inkscape
- reset preferences / fresh install / old install
-
#### What happened?
- observe that the performance of canvas is not awesome
#### What should have happened?
- but if you set your render cash to 4bg (btw can we set is higher ?)
- and number of cores to 12
canvas is much better
we should set this as a default setting
and also after upgrade force set this for user
#### Inkscape Version and Operating System:
- Inkscape Version: ...
- Operating System: ...
- Operating System version: ...
issue