2) Laptop/Desktop? Make/Model?
Custom-built:
Intel Core i7-3930K Sandy Bridge-E 3.2GHz (3.8GHz Turbo) LGA 2011 130W Six-Core Desktop Processor BX80619i73930K
G.SKILL Ripjaws Z Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory Model F3-17000CL11Q-16GBZL
ASRock X79 Extreme4 LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Corsair Force Series GT CSSD-F120GBGT-BK 2.5" 120GB SATA III Internal Solid State Drive (SSD)
CORSAIR Enthusiast Series CMPSU-750TX 650W ATX12V / EPS12V SLI Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply
CORSAIR H100 (CWCH100) Extreme Performance Liquid CPU Cooler
3) Operating System? Windows 8 Developer Preview, Build 8102
4) Ableton Live version? 8.2.1
5) CPU Make, Model, and Speed? i7 3930k at stock 3.2 GHz.
6) Amount of Ram? 16 GB, 1600MHz stock (could be OC'd to 2133 MHz)
7) Soundcard (and driver version if you know it)? Focusrite Scarlett 2i2 (used with ASIO4all so I can manually set buffer to 512)
8/ Hard Disk Drive Speed (if you know)? Corsair Force Series GT CSSD-F120GBGT-BK at 555MB/s read, 525MB/s write
9) Number of playback tracks? 8
More testing:
8: 20%
16: 23%
24: 28%
32: 29%
40: 37%
48: 40%
56: 46%
64: 54%
72: 55%
80: 59%
88: 67%
96: 71%
104: 77%
112: 84% super tiny clicks.
120: 91% more pronounced clicks.
Went below 112 and got to maximum 108 TRACKS without clicks. (Clicked only in the beginning for like a few ms, but it's very negligible).