render agent optimization

[mehulsinha73]

Closes #86

[mehulsinha73]

Final render optimization improvements observed on the understanding_artists code snippet

Prior to improvements:
ncalls tottime percall cumtime percall
140 5.656 0.040 24.913 0.178

After Improvements:
ncalls tottime percall cumtime percall
2320 0.014 0.000 0.082 0.000

Observed an average of ~30-35 fps, with periodic drops to around ~20 fps