When I launch a new game, I only have one star for performance, even for 1 league only, despite a good configuration for this (i don't want 3D view of matches):
Xubuntu Vivid x64 / Intel Celeron J1900 4x2ghz / Intel Graphics with shared memory (up to 2Gb) / 4Go DDR3 / Steam Linux version
I can launch other native games from Steam like Crusader Kings 2 or Half Life in full without problem. Maybe because Football Manager is a 32-bit game only ...