For your setting:
-Decrease max subdivision a bit (14 is a lot I think)
-If you have like 12 gig of Ram, put up your ''Dynamic memory limit'' in ''V-Ray System'' to 10 000 for example.
-Glass material: If your Reflection/Refraction subdivision is high, decrease it (to 6 or 7 or less), it will save a lot of rendering time.
-You are using ''Brute force'' as Primary Bounces pass in ''Indirect illumination'', Brute force taking more time I think, try ''Irradiance map''
Hope it will help a bit.