MT7620 WIFI芯片速率问题

在适应MT7620开发时，发现电脑上WIFI的连接速率只有72mbps。
MT7620为2X2天线，至少应该有150mbps才对啊.为什么呢？
页面的WIFI设置如图。
另外检查了EEPROM中512B的寄存器数据如下：
iwpriv ra0 e2p
ra0 e2p:
[0x0000]:7620[0x0002]:0105[0x0004]:0C00[0x0006]:7643
[0x0008]:1020[0x000A]:FFFF[0x000C]:FFFF[0x000E]:FFFF
[0x0010]:FFFF[0x0012]:FFFF[0x0014]:FFFF[0x0016]:FFFF
[0x0018]:FFFF[0x001A]:FFFF[0x001C]:FFFF[0x001E]:FFFF
[0x0020]:FFFF[0x0022]:FFFF[0x0024]:FFFF[0x0026]:FFFF
[0x0028]:0C00[0x002A]:7643[0x002C]:7720[0x002E]:0C00
[0x0030]:7643[0x0032]:6620[0x0034]:0C22[0x0036]:0000
[0x0038]:FFFF[0x003A]:012E[0x003C]:7755[0x003E]:AAA8
[0x0040]:888C[0x0042]:FFFF[0x0044]:000A[0x0046]:0000
[0x0048]:0000[0x004A]:0000[0x004C]:0000[0x004E]:FFFF
[0x0050]:FFFF[0x0052]:1414[0x0054]:1414[0x0056]:1212
[0x0058]:1614[0x005A]:1216[0x005C]:1111[0x005E]:1512
[0x0060]:1919[0x0062]:191A[0x0064]:1919[0x0066]:1A1A
[0x0068]:1717[0x006A]:1717[0x006C]:1A19[0x006E]:FF80
[0x0070]:FFFF[0x0072]:FF80[0x0074]:FFFF[0x0076]:0000
[0x0078]:FFFF[0x007A]:FFFF[0x007C]:FFFF[0x007E]:FFFF
[0x0080]:FFFF[0x0082]:FFFF[0x0084]:FFFF[0x0086]:FFFF
[0x0088]:FFFF[0x008A]:FFFF[0x008C]:FFFF[0x008E]:FFFF
[0x0090]:FFFF[0x0092]:FFFF[0x0094]:FFFF[0x0096]:FFFF
[0x0098]:FFFF[0x009A]:FFFF[0x009C]:FFFF[0x009E]:FFFF
[0x00A0]:FFFF[0x00A2]:FFFF[0x00A4]:FFFF[0x00A6]:FFFF
[0x00A8]:FFFF[0x00AA]:FFFF[0x00AC]:FFFF[0x00AE]:FFFF
[0x00B0]:FFFF[0x00B2]:FFFF[0x00B4]:FFFF[0x00B6]:FFFF
[0x00B8]:FFFF[0x00BA]:FFFF[0x00BC]:FFFF[0x00BE]:FFFF
[0x00C0]:FFFF[0x00C2]:FFFF[0x00C4]:FFFF[0x00C6]:FFFF
[0x00C8]:FFFF[0x00CA]:FFFF[0x00CC]:FFFF[0x00CE]:FFFF
[0x00D0]:FF20[0x00D2]:FFFF[0x00D4]:FFFF[0x00D6]:FFFF
[0x00D8]:FFFF[0x00DA]:FFFF[0x00DC]:FFFF[0x00DE]:0808
[0x00E0]:0808[0x00E2]:0004[0x00E4]:0707[0x00E6]:0004
[0x00E8]:0808[0x00EA]:0004[0x00EC]:0707[0x00EE]:0004
[0x00F0]:FFFF[0x00F2]:FFFF[0x00F4]:FFFF[0x00F6]:FFFF
[0x00F8]:FFFF[0x00FA]:FFFF[0x00FC]:FFFF[0x00FE]:FFFF
[0x0100]:FFFF[0x0102]:FFFF[0x0104]:FFFF[0x0106]:FFFF
[0x0108]:FFFF[0x010A]:FFFF[0x010C]:FFFF[0x010E]:FFFF
[0x0110]:FFFF[0x0112]:FFFF[0x0114]:FFFF[0x0116]:FFFF
[0x0118]:FFFF[0x011A]:FFFF[0x011C]:FFFF[0x011E]:FFFF
[0x0120]:FFFF[0x0122]:FFFF[0x0124]:FFFF[0x0126]:FFFF
[0x0128]:FFFF[0x012A]:FFFF[0x012C]:FFFF[0x012E]:FFFF
[0x0130]:FFFF[0x0132]:FFFF[0x0134]:FFFF[0x0136]:FFFF
[0x0138]:FFFF[0x013A]:FFFF[0x013C]:FFFF[0x013E]:FFFF
[0x0140]:FFFF[0x0142]:FFFF[0x0144]:FFFF[0x0146]:FFFF
[0x0148]:FFFF[0x014A]:FFFF[0x014C]:FFFF[0x014E]:FFFF
[0x0150]:FFFF[0x0152]:FFFF[0x0154]:FFFF[0x0156]:FFFF
[0x0158]:FFFF[0x015A]:FFFF[0x015C]:FFFF[0x015E]:FFFF
[0x0160]:FFFF[0x0162]:FFFF[0x0164]:FFFF[0x0166]:FFFF
[0x0168]:FFFF[0x016A]:FFFF[0x016C]:FFFF[0x016E]:FFFF
[0x0170]:FFFF[0x0172]:FFFF[0x0174]:FFFF[0x0176]:FFFF
[0x0178]:FFFF[0x017A]:FFFF[0x017C]:FFFF[0x017E]:FFFF
[0x0180]:FFFF[0x0182]:FFFF[0x0184]:FFFF[0x0186]:FFFF
[0x0188]:FFFF[0x018A]:FFFF[0x018C]:FFFF[0x018E]:FFFF
[0x0190]:FFFF[0x0192]:FFFF[0x0194]:FFFF[0x0196]:FFFF
[0x0198]:FFFF[0x019A]:FFFF[0x019C]:FFFF[0x019E]:FFFF
[0x01A0]:FFFF[0x01A2]:FFFF[0x01A4]:FFFF[0x01A6]:FFFF
[0x01A8]:FFFF[0x01AA]:FFFF[0x01AC]:FFFF[0x01AE]:FFFF
[0x01B0]:FFFF[0x01B2]:FFFF[0x01B4]:FFFF[0x01B6]:FFFF
[0x01B8]:FFFF[0x01BA]:FFFF[0x01BC]:FFFF[0x01BE]:FFFF
[0x01C0]:FFFF[0x01C2]:FFFF[0x01C4]:FFFF[0x01C6]:FFFF
[0x01C8]:FFFF[0x01CA]:FFFF[0x01CC]:FFFF[0x01CE]:FFFF
[0x01D0]:FFFF[0x01D2]:FFFF[0x01D4]:FFFF[0x01D6]:FFFF
[0x01D8]:FFFF[0x01DA]:FFFF[0x01DC]:FFFF[0x01DE]:FFFF
[0x01E0]:FFFF[0x01E2]:FFFF[0x01E4]:FFFF[0x01E6]:FFFF
[0x01E8]:FFFF[0x01EA]:FFFF[0x01EC]:FFFF[0x01EE]:FFFF
[0x01F0]:FFFF[0x01F2]:FFFF[0x01F4]:FFFF[0x01F6]:FFFF
[0x01F8]:FFFF[0x01FA]:FFFF[0x01FC]:FFFF[0x01FE]:FFFF

：/etc/config/wireless
option ht '20+40'
改为
option ht '40'
我的QQ：1613043278 TEL：18038168388

先确定下你的网卡支持连到150/300M？