Thunder Force Gold pack 2 on pi1.9.0 branch using odroid n2+ Emuelec

[Kelvfimer]

Hello

While playing Thunder Force IV the ship sprite and enemy sprites totally disappear.

To repro.

Select TF4 On screen selection selects first AIR-RAID. Enable skip frames. Play one minute and suddently the sprites will disappear

Without enabling frame skipping it happens but in a lesser cadence. It seems to happen to all games.

thx