When I set my speed of my craft to 1 or higher I fall off my craft but 0.9 works fine. How can I fix this? here is my .craft file

name: Submarine
maxSize: 100000
minSize: 10
allowedBlocks:
- 5
- 10
- 11
- 17
- 20
- 23
- 25
- 26
- 29
- 33
- 34
- 35
- 41
- 42
- 43
- 44
- 47
- 49
- 50
- 53
- 54
- 55
- 57
- 58
- 61
- 62
- 63
- 64
- 65
- 68
- 69
- 70
- 71
- 72
- 75
- 76
- 77
- 82
- 85
- 87
- 89
- 92
- 93
- 94
- 95
- 96
- 101
- 102
- 107
- 109
- 112
- 113
- 114
- 116
- 117
- 118
- 122
- 123
- 124
- 125
- 126
- 130
- 131
- 133
- 134
- 135
- 136
- 138
- 139
- 140
- 143
- 144
- 145
- 146
- 147
- 148
- 149
- 150
- 151
- 152
- 154
- 155
- 156
- 157
- 158
- 159
- 163
- 171
- 172
- 173

forbiddenBlocks:
- 7

canCruise: true
cruiseSkipBlocks: 4
canFly: false
minHeightLimit: 10
maxHeightLimit: 200
sinkPercent: 99.0
speed: 1
fuelBurnRate: 0.1
tryNudge: false
flyblocks:
42:
- 15.0
- 100.0
49:
- 0.0
- 10.0


all help is appreciated