Pixel extraction from Synergy products

Dear Sentinel-3 toolbox developers,

I was trying to extract pixels from SY_2_SYN products (OLCI + SLSTR top of bottom of atmosphere reflectance) with Pixels extraction tool. However, SNAP, even 7.0, refuses to do it and simply hangs forever.

Is there any special trick I should do to extract reflectance and masks?

Best regards,

PS Is there any progress in the issue risen in SNAP memory issues while importing S3 products that SNAP uses 8 times more RAM to open a synergy product than the product size itself (4000 MB RAM to open 500 MB product)?