RTX 2070 doesn't seem to be running at 100%
We have several machines at the office and all the GTX cards, ranging from 1060 - 1080ti, seem to be running at maximum because the computer's display will lag every few seconds or so.

On the rtx 2070 however, there is no stutter what-so-ever. This is making me think that it's not being as challenged. It claims to be running at "100% 65 Celsius" with ~750 H/s.

What's going on here?

- nvidia drivers 430.39
- windows 10 w latest updates
- XMRig-NVIDIA/2.14.3
- libuv/1.24.1 CUDA 10.10 OpenSSL/1.1.1a microhttpd/0.9.61

config for rtx machine
```
{
    "algo": "cryptonight",
    "api": {
        "port": 0,
        "access-token": null,
        "id": null,
        "worker-id": null,
        "ipv6": false,
        "restricted": true
    },
    "background": false,
    "colors": true,
    "cuda-bfactor": 6,
    "cuda-bsleep": 25,
    "cuda-max-threads": 64,
    "donate-level": 1,
    "log-file": null,
    "pools": [
        {
            "url": "nyc02.supportxmr.com:7777",
            "user": "xxx",
            "pass": "rtx2070",
            "rig-id": null,
            "nicehash": false,
            "keepalive": true,
            "variant": -1,
            "enabled": true,
            "tls": false,
            "tls-fingerprint": null
        }
    ],
    "print-time": 60,
    "retries": 5,
    "retry-pause": 5,
    "threads": [
        {
            "index": 0,
            "threads": 30,
            "blocks": 108,
            "bfactor": 6,
            "bsleep": 25,
            "sync_mode": 3,
            "affine_to_cpu": false
        }
    ],
    "user-agent": null,
    "syslog": false,
    "watch": true
}
```