What you have is a CPU with an integrated graphics unit plus a GT 555M graphics card. which in effect means that less graphic intensive tasks are handled by the CPU and gaming etc would be handled by the GT 555M, this is what I believe anyway, Dell,as usual do not give much detail on the components usedin their PC.s. As to whether you have a problem with the switching, I have no idea.
The system uses (or is meant to) "Optimus" to decide whether a graphics task can be handled by the "onboard graphics", or if the power of the dedicated graphics card is needed.
I confess I don't know exactly HOW it does that, but, as "battery modes" tend to throttle back on graphics, to conserve power, I tend to suspect there may be a clash, when you are running in battery mode.
Whether you can adjust anything, to prevent this, I wouldn't know, but Dell support are very good, and will advise you.
just to confirm it was definitely the issue i noted above because the flickering has stopped completely. Basically having the graphics (onboard) set to "max battery" seems to conflict with the battery operations anyway. Have set it to balanced and there have been not further issues
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