According to your info in regards to gearing this is what you would have been running with the 2200kv motor and stock setup.

Differential Ratio: 3.2222222222222223
Transmission Ratio: 2.215277777777778
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 20
Total Voltage: 21.00
Motor KV: 2200
Tire Diameter (inches): 6.3
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.006
Spur/Pinion Ratio: 2.2 : 1
Total Ratio: 15.70386 : 1
Tire Circumference (inches): 19.79 inches (502.72 mm)
Rollout: 1.26:1
Total Motor Speed: 46200 RPM
Vehicle Speed: 55.14 mph (88.57 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

That's still pretty tall gearing in my book but with you current setup it gets worse. Now with the 1717, 39T idler and you 22/44 gearing you are pushing past 60mph on 5S. That is too high IMO and I am sure others will agree.

Differential Ratio: 3.2222222222222223
Transmission Ratio: 1.5366847826086956
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 22
Total Voltage: 21.00
Motor KV: 1580
Tire Diameter (inches): 6.3
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 2 : 1
Total Ratio: 9.90308 : 1
Tire Circumference (inches): 19.79 inches (502.72 mm)
Rollout: 2.00:1
Total Motor Speed: 33180 RPM
Vehicle Speed: 62.8 mph (100.87 km/h)
Effective KV Value: 1580
KT constant: 0.86 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...


Plenty of people use the 1717 motor with a MMM esc and have no issues what so ever. My friend has the 1717 in his Savage and he is beating the snot out of it on 6S every day with a HW 150A ESC. Only difference is he got his gearing a lot lower than you. I have also ran the 1717 in my E-Revo with the MMM, geared for just under 60mph on 6S and everything stayed cool.