Improve Backstage Performance (Slowdown since new Shell)

Per subject, have noted that the performance in Backstage has suffered dramatically since the new Shell was introduced.

Simple things such as opening the event viewer and scrolling are dramatically slower (i.e clicks not being registered for up to one second, using the cursor keys to scroll through event logs used to be instant but now there's a marked delay)

Have seen this across a wide stretch of hardware; doesn't seem to be hardware specific. An option to toggle between the original cmd/powershell and the new shell would be useful if this is something that cannot be resolved.