Weird R problem: Internet keeps disconnecting whenever I run any raster calculation using the "raster" package

I ran into what seems to be a fairly unique problem on R’s "raster" package.

I am not sure how to provide a reproducible example for people reading this, but the long and short of it is that whenever I perform calculations involving my raster objects, the internet shuts down for the whole house. While I can’t provide the raster images themselves because they are so big, I can provide their general description. Objects like these are about a gigabyte each.

class      : RasterLayer 
dimensions : 15336, 19016, 291629376  (nrow, ncol, ncell)
resolution : 30.85642, 30.85642  (x, y)
extent     : 610995.9, 1197762, 9526801, 10000015  (xmin, xmax, ymin, ymax)
crs        : +proj=utm +zone=52 +south +datum=WGS84 +units=m +no_defs  +ellps=WGS84 +towgs84=0,0,0
source     : C:/Users/tug74077/AppData/Local/Temp/RtmpcVf7pt/raster/r_tmp_2020-07-21_082952_22832_46671.grd
names      : layer 
values     : 6378.035, 2016403  (min, max)

And sometimes I use raster stacks, which are much larger (about 10 gigabytes)

class      : RasterStack 
dimensions : 15336, 19016, 291629376, 30  (nrow, ncol, ncell, nlayers)
resolution : 30.85642, 30.85642  (x, y)
extent     : 610995.9, 1197762, 9526801, 10000015  (xmin, xmax, ymin, ymax)
crs        : +proj=utm +zone=52 +south +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0 
names      : ap_hp_stack.1, ap_hp_stack.2, ap_hp_stack.3, ap_hp_stack.4, ap_hp_stack.5, ap_hp_stack.6, ap_hp_stack.7, ap_hp_stack.8, ap_hp_stack.9, ap_hp_stack.10, ap_hp_stack.11, ap_hp_stack.12, ap_hp_stack.13, ap_hp_stack.14, ap_hp_stack.15, ... 
min values :     426.50653,     403.31589,     381.38617,    360.64886,     341.03912,     322.49561,     304.96039,     288.37863,     272.69846,      257.87088,      243.84953,      230.59058,      218.05255,      206.19627,      194.98465, ... 
max values :     134839.22,     127507.53,     120574.50,    114018.44,     107818.85,     101956.36,      96412.63,      91170.34,      86213.09,       81525.38,       77092.55,       72900.77,       68936.89,       65188.55,       61644.02, ...

The type of calculation that would disconnect the internet ranges from a simple stacking operation of 30 rasters like this:

ann.cost_hp_t_stack <- stack(ann.cost_hp_t)

(ann.cost_hp_t is a list of 30 rasters that look like a single raster layer in the above (former) description that will be stacked to create ann.cost_hp_t_stack, which resembles a raster stack in the above (latter) description),

to an operation that looks like this:

for (i in c(1:30)){
  ann.cost_hp_t[[i]] <- ann.cost_t_im / ((1 + 0.05)^i)
}

where ann.cost_t_im is another raster layer resembling the raster layer described above.

In addition to the internet cutting out for the whole router/house, my local disk gets filled up too, and I have to regularly restart R to free up about 140 gigabytes of disk space.

If you have read this far, thank you very much for your time. Also, sorry if the formatting is confusing.

TL;DR: My internet keeps cutting out when I use the "raster" package in R to create gigabytes upon gigabytes of data.